Vegetable stock is a great way to add some flavor to lots of things! I like to use it in soups or use instead of water when cooking rice.
It's super easy to do. I just save all of my vegetable scraps in gallon freezer bags. By scraps I mean anything left from a vegetable you would otherwise throw away. The stems, the tops and bottoms you cut off, the peel, etc. all goes in the bag! No need to use new, fresh veggies. Just save your scraps and it's FREE! :)
Once you have a bag or two full, just toss all your frozen scraps in the crock pot. Fill crock pot with water to fully cover all your scraps plus a little more. Set on HIGH for 6-8 hours. When finished pour through a fine mesh strainer or cheese cloth.
You can freeze your vegetable stock in bags, containers or ice cube trays for a few months. Refrigerate is fine, but should be used in a few days. Personally, we like to can ours because it saves room in the freezer and will last for a long time.